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To all whom it may concern:

Be it know rthut 1, Hence H0211, subiecc oi the Emperor oi Japsn, residing at l lo. IB-Chome, liliynshita Dori, Asohiguwn Kn, Hokkaido, Japan, hove invented new and useful Improvements in Processes of Resuscitating Spent Dry Cells, of which the following is a specification.

This invention relates to a process for resuscitating dry cells, particularly that kind of dry cells in which carbon is use-:1 as the positive pole, zinc plate as the negative pole, peroxid of manganese us the (lcpolarizer, and chlorid of ammonium as the exciting fiuid; and consists in boring a hole through it spent cell, filling the hole with mixture of chlorid of ammonium, chlorid of sodium and oxalic acid, heating the cell thus filled until it gives out vapor, and then submerging it in water, thus cooling the cell and causing the water to enter therein.

The object of this invention is to resuscitete by a simple method the electricity generating power of it spent dry cell by reniov in injurious mattgn's and causing exciting fluid to he ei' enly distributed in the cell.

Dry cells become ineli'ective when used for a cert-sin period, and even when they are not used, they lose their ethcacy after the lapse of a certain period of time, notwithstanding that the zinc plates, peroXicl oi manganese and other exciting materials are still meining; and they become utterly useless. Several attempts have been made to recover the efiicacy of spent dry cells by pouring a solution of chloricl of. 2111'1111(11ll1l1'1, hut in none of these the ob ect was obtained in any i satisfactory manner,

This invention is an improvement on such a. process, and the following isnn example of carrying it into practice.

Prepare a mixed solution of @200 grains of ohloricl of sodium, 120 grains of chlorid of ammonium, 40 grains of oxalic acid. 20 grains of anilin dye and i500 grains of water, and pour the solution thus prepared in a, vertical hole pierced in a spent cell from the top through the part where the depolarizer is packed. Heat the cell thus filled with the Sold solutvionulntil it gives out vapor nhun daut1y,nn'd then plunge it into water to cool,- at the'sanie. time causing water to penetrate into the interior of the cell.

I um swore that thereis known a kind of cells which is so constructed that exciting fluid su-Qhns chlorid of aunnoniuin or the iipplica'tionfilcai laisy 1 vthe electricity exciiingr sot-ion Specification. of Letier. i i

like is poured such 21 cell, patos notw" zinc and nnniining,

chlorid of zinc heiu, mourn produced by decompo 0i mnnioniuni forms pine-like i oxychlorid oft zinc, which covers of the zinc plates, and that the depolnriz too 1s made 1 :tive being covered y grade oxid oz lining-tine object of removingthe injurious p; formed in ll-3Q r. en exciting electricity, l hereinhei ore described mixed so. liow, Wi

r pour i1; 1 solution into a. spent dry cell and by henti nialce the solution boil in the cell, makes the said injurious products soluble. Then by plunging the cell into water while it is hot, the vapor therein is caused condense which producing; u vacuum makes the water penet into the cell e 102 effects even distribution 0 Thus the the exciting emcee-y ot a pent cell 1s most satisfactorily restored.

According to this invention, at least of the original capacity of utterl dry cell can he easily recovered, and tni can repeated several times (genernli four o five times} until the cash t fluid leaks through so mutilated the.

1 claim i. A process resuscitating spent dry cells, consisting in boring" a holein is. spent dry cell, filling the said hole with a mixed solution oi chlorid of ammonium, chlorid of sodiunn and oxalic acid, heating the cell and then plunging the same into water, substantially us and for the purpose hereinbefore set forth.

'3. A process for PQSHSflt-{lblng spent dry cells, consisting in boring :1 hole in spentdry cell, filling the said hole \ith aqueous solution of chlorid of ammonium, chlorid of sodium, and oxalic acid, heating the cell till vapor is emitted, and then cooling the cell by plunging the same into water, thus causing water to penetrate into the cell, substantially as and for the purposes hereinhefore set forth.

3. A process of rcsusci tnting spent dry cells which consists in rendering the injurious products on the surface of the electrode and 'depolal'izers soluble by injecting an exciting fluid into the cell, boiling the fluid in the cell, and then adding water thereto.

4. A process as embodied in claim 3 wherein the. Water is added by submel'ging the cell into cool water while the exciting fluid is in the heated state 5-. A process of resuseitating spent dry cells which consists in injecting into a cell a '16 mixed solution of chlorirl of ammonium,

chlorid of sodium and oxalic acid in the preportions specified, heuting the cell, and then plunging the same into water.

In testimony whereof I have signed my name to this specification in the presence of 5 two subscribing witnesses.

KAZI O 110121 I.

\Yitnesses H. F. OLFRUCIUS, Yosino KAWADA. 

